Developer Tooling in the Madness of Multichain | Kaven Choi, Etherscan | ETHTaipei 2025

[Music] Guys, Taipe Niha. Um, as we throughout the years, uh, it scan has been building many instances and, uh, one thing we usually always bump into ourself is how do we navigate the different instances that we have? How do we display and make multi-chain a little bit more accessible? So the first things we always bomb into ourself is if I would like to check my balances, if I would like to check my tokens on the other EVM compatible chains, how can I go about what instances do we have? Uh which explorers is being hosted by EtherCAN.

So the first thing we introduce is the multi-chain portfolio. So the multi-chain portfolio is a comprehensive portfolio uh that gives you a overview of the assets you have across the different uh EVM chains and this is baked into etherscan itself. So if you are on your addresses, go to the multi-chain portfolio tab and you'll be able to uh filter, navigate, uh select the different explorers that you want want to view and the assets will display accordingly. Uh this is very interesting because once we launch this feature uh there are a lot of people come and tell us that they discover their dominant funds at uh or their air drops in other uh EVM network as well and I think it helps a lot of people uh get a couple of air drops they are not aware of. So um to help developers as well uh recently a couple months back uh we uh actually launched our ether scan API v2.

Um this is really interesting because with so many instances and uh so many API endpoints and so many different uh URL how do we consolidate and have that ease of use to digest this information. So we introduced uh the API v2 um one key and multiple chains. So with one API key or one API subscription for you guys that need higher rate limit uh you would just need to subscribe to the etherscan API then you will have access to 50 plus mainet and test net. They do share most of the same endpoints and uh with this also you have the multi-chain contract verification. uh this uh has been a hit with death.

Uh they can deploy on many instances and with one API key they can verify their contracts across the different Etherscan instances that they have. Um okay uh Etherscan cards is something that we also introduce uh when you look at a certain addresses and that's about it. uh but the cuts is aimed to provide additional context toward it. Uh for example, security ratings uh the different yield opportunity that you have and uh one of the uh earlier integrators are po um and um you can also see how many events that you attended and how many po you have using ether scan cut on a specific address. Yep.

So yep, the ether scan cards adds contextual information to a particular address uh where you have uh you can discover you opportunity like I mentioned uh there are also security cards that uh exposes security risk on certain addresses contracts as well. Other than that uh we do also pushed out a couple of uh security features uh as a lot of uh developers and users has been copying addresses looking at their transaction as well. Um it's a very conscious decision decision for us to add a lot of this security features uh especially uh hiding a lot of uh low reputation and zero value token transfer. So this also uh obscure a lot of spams uh on the explorer itself and also if you're copying any addresses we will do remind you again that to check your address because a lot of people copy from the page itself and uh they do fall victim to a lot of uh this fishing attempts. Uh, yep.

So, Etherscan, it's a little bit uh huge. Uh, it's a little bit deep and for users that wants to look into just a simple portfolio, uh, we introduce block scan. So, Bloxcan is a we call it the multi-chain explorer. Uh, it's a simple uh, uncluttered multi-chain explorer. We don't have a lot of uh, deaf tooling.

Uh, it's just simple portfolio transactions. Uh one good thing about block scan is that uh we aggregate all of the labels from the different instances. Uh on block scan uh you will be able to see a lot of uh addresses with uh name tags on them. Um and uh it's easier for users to navigate between the different uh instances that we have all under one roof. the block scan.

Uh I think we will be supporting NFTs soon. So you will be able to see most of your NFTs together and I think that's it. Uh if you do have any feedback uh please feel free to uh pink us and uh we are always very helpful. Thank you. [Music]